5-Amino-2-(chloromethyl)-3-(difluoromethyl)pyridine-6-carboxylic acid
2-Amino-4-(aminomethyl)-5-(difluoromethyl)pyridine-3-carboxylic acid
Methyl 6-amino-4-(aminomethyl)-3-(difluoromethyl)pyridine-2-acetate
2-Amino-3-(aminomethyl)-5-(difluoromethyl)pyridine-4-carboxylic acid